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RosettaCodeData/Task/Look-and-say-sequence/APL/look-and-say-sequence-2.apl
Ingy döt Net f23f22d71c Initial data commit
2023-07-01 13:44:08 -04:00

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R←LNS V;T
R←0⍴0 ⍝ initiate empty reply
LOOP:T←↑⍴↑(=\V)⊂V←,V ⍝ t is the length of the 1st digit's run
R←R,T,↑V ⍝ append t and the 1st digit
→(0≠↑⍴V←T↓V)/LOOP ⍝ drop t digits and iterate
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